import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int year = sc.nextInt();
        int month = sc.nextInt();
        int day = sc.nextInt();
        Birthday birthday = new Birthday(year,month,day);
        System.out.println("age="+birthday.getAge());
    }
}
class Birthday{
    private int year;
    private int month;
    private int day;

    public Birthday(int year, int month, int day) {
        this.year = year;
        this.month = month;
        this.day = day;
    }
    public int getAge(){
        return 2017-year;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    public int getMonth() {
        return month;
    }

    public void setMonth(int month) {
        this.month = month;
    }

    public int getDay() {
        return day;
    }

    public void setDay(int day) {
        this.day = day;
    }

}